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Enhanced optical properties of chitosan polymer doped with orange peel dye investigated via UV–Vis and FTIR analysis.

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Title: Enhanced optical properties of chitosan polymer doped with orange peel dye investigated via UV–Vis and FTIR analysis.
Authors: Mamand, Dyari M.1 (AUTHOR), Muhammad, Dana S.2 (AUTHOR), Aziz, Shujahadeen B.3 (AUTHOR) shujahadeenaziz@gmail.com, Hama, Peshawa O.4 (AUTHOR), Al-Asbahi, Bandar A.5 (AUTHOR), Ahmed, Abdullah A. A.6 (AUTHOR), Hassan, Jamal7 (AUTHOR) jamal.hassan@ku.ac.ae
Source: Scientific Reports. 1/25/2025, Vol. 15 Issue 1, p1-18. 18p.
Subject Terms: *PHYSICAL & theoretical chemistry, *LIGHT absorption, *ORANGE peel, *SOLID electrolytes, *OPACITY (Optics)
Abstract: The current research aims to determine the impact of orange peel dye (OPD), an eco-friendly addition, on the optical properties of biodegradable polymers. This study investigates the enhancement of optical properties in solid electrolytes based on chitosan (CS) and glycerol, with varying OPD concentrations. UV–Vis-NIR spectroscopy revealed significantly enhanced UV–visible light absorption in the 200–500 nm region and effective UV light blocking. FTIR analysis showed strong interactions between OPDs and the CS matrix, with functional groups such as O–H, C=O, and C=C. UV–Visible spectroscopy indicated a reduction in the optical band gap from 5.11 eV in pure CS to 2.93 eV and 2.84 eV with increasing OPD concentrations, reflecting alterations in the electronic structure and enhanced sub-bandgap states. The refractive index improved from 1.31 in pure CS to 1.54 and 1.62 in the doped electrolytes, attributed to increased optical density and light-harvesting capability. Optical basicity also increased from 1.01 to 1.32, enhancing donor properties. These results suggest that OPD-doped CS solid electrolytes offer enhanced optical properties, making them suitable for optoelectronic and UV-blocking applications due to their tunable band gap, improved polarizability, and enhanced light interaction. [ABSTRACT FROM AUTHOR]
Copyright of Scientific Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Enhanced optical properties of chitosan polymer doped with orange peel dye investigated via UV–Vis and FTIR analysis.
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  Data: <searchLink fieldCode="AR" term="%22Mamand%2C+Dyari+M%2E%22">Mamand, Dyari M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muhammad%2C+Dana+S%2E%22">Muhammad, Dana S.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aziz%2C+Shujahadeen+B%2E%22">Aziz, Shujahadeen B.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> shujahadeenaziz@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Hama%2C+Peshawa+O%2E%22">Hama, Peshawa O.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Al-Asbahi%2C+Bandar+A%2E%22">Al-Asbahi, Bandar A.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ahmed%2C+Abdullah+A%2E+A%2E%22">Ahmed, Abdullah A. A.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hassan%2C+Jamal%22">Hassan, Jamal</searchLink><relatesTo>7</relatesTo> (AUTHOR)<i> jamal.hassan@ku.ac.ae</i>
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  Data: <searchLink fieldCode="JN" term="%22Scientific+Reports%22">Scientific Reports</searchLink>. 1/25/2025, Vol. 15 Issue 1, p1-18. 18p.
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  Data: *<searchLink fieldCode="DE" term="%22PHYSICAL+%26+theoretical+chemistry%22">PHYSICAL & theoretical chemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22LIGHT+absorption%22">LIGHT absorption</searchLink><br />*<searchLink fieldCode="DE" term="%22ORANGE+peel%22">ORANGE peel</searchLink><br />*<searchLink fieldCode="DE" term="%22SOLID+electrolytes%22">SOLID electrolytes</searchLink><br />*<searchLink fieldCode="DE" term="%22OPACITY+%28Optics%29%22">OPACITY (Optics)</searchLink>
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  Label: Abstract
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  Data: The current research aims to determine the impact of orange peel dye (OPD), an eco-friendly addition, on the optical properties of biodegradable polymers. This study investigates the enhancement of optical properties in solid electrolytes based on chitosan (CS) and glycerol, with varying OPD concentrations. UV–Vis-NIR spectroscopy revealed significantly enhanced UV–visible light absorption in the 200–500 nm region and effective UV light blocking. FTIR analysis showed strong interactions between OPDs and the CS matrix, with functional groups such as O–H, C=O, and C=C. UV–Visible spectroscopy indicated a reduction in the optical band gap from 5.11 eV in pure CS to 2.93 eV and 2.84 eV with increasing OPD concentrations, reflecting alterations in the electronic structure and enhanced sub-bandgap states. The refractive index improved from 1.31 in pure CS to 1.54 and 1.62 in the doped electrolytes, attributed to increased optical density and light-harvesting capability. Optical basicity also increased from 1.01 to 1.32, enhancing donor properties. These results suggest that OPD-doped CS solid electrolytes offer enhanced optical properties, making them suitable for optoelectronic and UV-blocking applications due to their tunable band gap, improved polarizability, and enhanced light interaction. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Scientific Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1038/s41598-025-87425-6
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        Text: English
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      – SubjectFull: LIGHT absorption
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      – SubjectFull: ORANGE peel
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      – SubjectFull: SOLID electrolytes
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      – SubjectFull: OPACITY (Optics)
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              Text: 1/25/2025
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